HDPE is toxin-free, and won't leak out chemicals like some of it's relatives, this makes it safe for food and water meant for human consumption. HDPE is also incredibly resistant to chemicals of all kinds, so it won't end up soaking up minerals from the soil underneath, and leaking into your water.
You can find HDPE in a wide variety of applications, including food storage, household appliances, or other commonplace utilizations.
